Thegraphic co



v ich ogs! "r, C, thgends to receive the outerends of leversaa of a tog# le, D, thelouter en` down and rounded tf loosely in the p he inner or` opposite ndsof the levers a a are votsc cfto nuts d @through passes, saidrod being x r y screws, e e, one of'vvhich as arightandbhel ther` a left handthread,

nnected by hich a screwro rovided with: tW`

cast() `Cause th o ly toward `is turned.- f arev attach `tid"levers:ff-,t Slide@ which" is i1 i rkfijree l i l placedajzmr H,

e` t permanently attached a r r r Uafull, ion of i the same, refmpanying draw- Sreccationrn p 'iew of my inven` rtical section of the v Fig. l; Figs. 3 and pertaining to the valiigure's.` r t r ntion is to `obtain an he ires of wheels may `ed oas to `fit the Wheels pplied Without being ich will admit of tires 4`-and `removed. from it, 1d the tires irrnlyA in t casually nnove nor rated upon.,` edinthfe art `to full-y unyinvention, Twill r, which is secured ce, B. To one endof which are perforated of saidlevers being bent form journals l, which orations ofthe bar C.

d dto" move simultane-` ch other as the rod E ff, 0f the toggle p inner ends by pivots g g er or opposite ends o ached by pivots h to a on the bar A, and is' hereonf i il, e side, there `is tted or own ,or ALroNA, ILLINols slide, the back f spot and the slide G is drawn H1 NES yi-'OR UPS sTTrN G rl R Es.

l i i Lemert ,fittest no. 35,6 r6, uma June 1 7, 1ste.

` rngated, soas to form vertical teeth i., This jaw is formed of a plate having a hook, j, at one end to. catch under the front edge of the end of the plate or jaw having va pendent projection, 7c,which extends dowllat the back edge of the slidelG. -rlhe hook j and projection It are shown clear] y in Fig. 3. The jaw H, when placed on the .slide G, bears against a ledge, Z, thereon.

` I is a slot which is made obliquely in the `slideG near the end opposite to that where the ledge l is placed or attached. The slot I has its inner` end rather' Wider than its outer end, as shown clearly in Fig. 1, and a taper key, J, istted vertically therein, the inner edge of as shown in Fig. `1. r f To the end of the bar A opposite to that where the cross-bar G is attached there is secured.,permanently a crossbar,JK, whichis of the same dimensions as the slide G and is provided with a ledge, m, and slot L, which are precisely similar to key, M, fitted in it which is precisely similar to the key J ofthe slide G. reverse position to lthe slot I of the slide G, and the inner ends' of the slots are nearer each rI he bar K is provided with a jaw, N, which is provided with a hook, a', and pendent pro- `jecton b, and constructed precisely like the `jaw H, with the exception that its teeth lhave H, as shown clearly in Fig. l. t

On the bar A, between the slide G and the bar K, there are placed a metal loop, O, and Aa short,` bar, l?, the latter being of such a width that it may tbetween the arms or prongs m m of the loop and slide freely therein. (See -Fig. 1.)- The loopO and bar l? have their upY per surfaces iiush cron a level with the upperl `surfaces of the slide Gand barK, as shown in Fig.2.`` i i y The operation is as follows: The tire to be y back from the bar K the full extent offits movement. The `heated portion of thetre is then placed between the slide G and bar K, the keys J M, which were previously removed,` being reeside of which is cor the key being beveled to forni a sharp edge,

the-ledgel and slotI of the slide G. llhe slot L of the bar K has a taper The slot Lhas a .other than their outer ends, as shown in Fig. l.

fa reverse raking position to those of the jaw shrunk or contracted is heated at the desired r placed in the slots l L, so as to clamp the tire v between the keysvand jaws at each side of the heated portion. The operator then, by means of a crank, turns the screw-rod E in a direction which will force the nuts d (l of the toggle D toward each other, and the slide G will consequently be moved on the bar A. in the direc .tion indicated by the arrow 1, and as the tire 1s irmly clamped at each side of its heated portion said portion will be upset or contracted to the required dimensions to suit the wheel to which it is to be applied. The keys J M, owing to their oblique position, have atendency to sink into the tire as the slide Gis moved, and they, under said movement of the slide G, do graduallysink into the tire as their inner or sharp edges work or move, as indicated in red in Fig. l. This movement ofthe keys is allowed by means of the enlarged inner ends of the slots I L, as will be fully understood by referring to Fig. I. The loop O and bar P serve as a support lor bearing f'or the heated portion ofthe tire, the bar P being moved into theloop O as the slide G is moved toward the bar K. In consequence of having pendent projections lc bt they are not displaced While the tire is being contracted or upset.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The taper keys J M, when litted intaper oblique slot-s I L for the purpose of enabling them to sink into the tire under the action of the slide G, as described.

2. The loop O and bar I), constructed and arranged,as shown,for the purpose oi forming a bearing or support for theheated portion ot' the tire, as specified.

3. The combination of the toggle D with slide G attached, the stationary bar K, jaws H N, the oblique slots I L, keys .I M, and the bearing or support formed of the loop O and bar P, all arranged forjoint operation, as and for the purpose set forth.

' GEORGE MCKOWN.

V i t n esses:

B. H. SCOTT, FRANK ALLEN. 

